520663740307 has 16 divisors (see below), whose sum is σ = 555899569920. Its totient is φ = 486213991200.

The previous prime is 520663740299. The next prime is 520663740319. The reversal of 520663740307 is 703047366025.

It is a cyclic number.

It is not a de Polignac number, because 520663740307 - 2³ = 520663740299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (520663740907) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7060408 + ... + 7133770.

It is an arithmetic number, because the mean of its divisors is an integer number (34743723120).

Almost surely, 2^520663740307 is an apocalyptic number.

520663740307 is a deficient number, since it is larger than the sum of its proper divisors (35235829613).

520663740307 is a wasteful number, since it uses less digits than its factorization.

520663740307 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78714.

The product of its (nonzero) digits is 635040, while the sum is 43.

The spelling of 520663740307 in words is "five hundred twenty billion, six hundred sixty-three million, seven hundred forty thousand, three hundred seven".